#  Copyright 2019-2020 The Lux Authors.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.


class Event:
    """
    Event represents a single operation applied to the dataframe, with input arguments of operation recorded
    """

    def __init__(self, name, *args, **kwargs):
        self.name = name
        self.args = args
        self.kwargs = kwargs

    def __repr__(self):
        if self.args == () and self.kwargs == {}:
            return f"<Event: {self.name}>"
        else:
            return f"<Event: {self.name} -- args={self.args}, kwargs={self.kwargs}>"
